hyatt



. l. s. HYATT.

Tax Calculator.

No. 77,736. I Param-[ed May 12, 1868.

.Xa/Wam# N.PETERS, PHOIO-UTHOGMPHLR. WASHINGTQN, la C.

Letters Patent'No. 77,736, dtezi May 12, ISGS.

IMPROVEMENT IN 'TAX-CALCULATORS.

digrdgehulc referrer tu ixrt'est @zum @tout mit mtiingpntt uf tkt Vfinura.-

'IO ALL VWHOM IT MAY'CONGERN: l.

Be it known that' I, I.v S. HYATT, of Roekford,in the county of Winnebago, and Statojof Illinois, haue invented a new and-'improved Modeof. Computing'Taxes, Equalizing Valuation-aud Making Rate-Bills, &c.;,

accompanying-drawings, and to lthe letters o f referencemarlied thereon, nwhichl Figure 1 is a portion of thetax-ealculator and a table.v i' Fgure-2 s-a cross-section through the sliding index.- Figure isatop uiew of the sliding index.- j Like letters referto-like parts'n the diier'eut figures.'

and I do hereby declare that .ithe following is a fullv and Aexaet .description thereof, reference beinghadltothe The nature of 'my invention' consists in providinga. board, J,' suitable to h oldnA table of figures, Afan-d'4.' having on its -left side a redet-track, E, -on which plays .theslido" '0,' carrying the adjustable index B, 4which serves'to find the amount, in the table of `igures,required on any given sum within thescope of suidtable. f

To enable 'others skilled in the art to make and use my invention, I will proceed'to describe-itsv 'construction A and operation.

I construct the board oi'iwoiod,'pasteboard, or -'any .other suitable inaterial. Qn left side, I'mak'a i rod or tracl, E, attached to't'he metal strip H, which is fastened to the board J.' On this rod or .track I- makel a slide, C, which traversesup and down the rod E.' In this slide I- insert one end'of-an index, B,-u1ade of brass,

` steel, cardboard, or -an'yfother suitable material. T'his index I'providewitlra slot, c, in oneend, so that it may be inserted inthe slide C;` und, when properly adjusted, ulay be held in position by the setscrew D. 0n this index-,.B,I malteprojectious.1145.v These projections arefor'the purpose ofcovering up or' cutting off-'thief .last one or more'igures in each cola for which nl@ table isl desired. A

On the slidingindeir, I ineke gures 100, 200, 3 00, Zito., to indicate .the hundreds of the values onA which the amount of' por cent is calculated in the tables. On one side of the board, J, make' a`-g1oove,f, in which one edge of the table of figures maybe inserted, and von thetwo corners 'opposite I provide set-screws, F, for the purpose of fastening the table A-in position,so that, as the index B is carried from one part ofthe table to another, its projections, b b b, will always cut off the same number oi" figures inone part ofthetablevas in another. I

mn of igures, 'according as .the index may be adjustedto the specific use Aiiith the device thus described I provide tablesof fgures, e'ach of which correctly expresses some rate perA cent.. on amounts freni 1 to 1,000, or 10,000, or such other compass of atnount's as may be desired; The table A is one oi" these, its rate bcin'gtcn yund five-tenths niills per dollar.

I- will non" describe thef'method of' use; vIi' it is desired to compute taxes at the rate often and iive-tenths mills per dollar, the table shown in the drawing is used. The 'sliding index,.'B,is carried, bythe left hand of' the operator, to the figures in the left' -collimn of the table, ji'hiclrespresses, the'units or tens of the value-on which the amount, according to the per` cent. mentioned, is'desircd.' From this point the eyeruusulong the index `cill it rests on the figures expressing the hundreds of the valuation, when the amount required is instantly seen -on the printed table just above the indcx` and between two of the projections, b b,

In the accompany-inc,"l drawing, the 'sliding index B is in position to show-the tax -on $4, $104, $204,"$304, kc., and shows it to be, respectively, 4 cents, 109 cents, 214 cents, 319 cents, 86e. If the tax oramount per cent. were required` on any other valuation, the slide would be rais'edor` loweredto the units ortens of such yaluatiomand the amount read jasv before.v If the rate desiredwere teu tiuies that mentioned, theiindex' B- would rst be adjusted, by meansoffthe set-screw D, s o as no't to cut oli' any figure, which is practically removing` the separating' point one figure to the right. If the rate required were one-tenth of the `first. rate-mentioned, the sliding ihdex would first be adjusted so as to out oi two guresin each column, whichis practically removing' the separating or decimal point two figures to the left'. -Iu this way, anytable that may be used in the calcu .lat-or may, by means of the adjustable sliding index B, be used for three or more rates, changing fromone to.

Another, by changing.fliedecimalfpoint bly means of the p'ijojections Iz b b, and cutting'o', when' required, the :fxjnctions o'fncents. v v I A A l. l

When the tables are'usd 'for-like purpose of equalizi'ng valuations', by increasing or diminishing the same,

Y the 'nuniber's shown by the sliding ndexzare .called dollars, Thus, `tlie table here used wilLsei-vc to add v'e -per centt-o theassessed'vluations and, as the vindex stands in the druwing,the values, $4, $104, $204, $304, Snc.,

a1-e shown fo' be raised, respectiely, to $4, $109, v$214, 3319, Ene.;

lllmfvig thus described myn'ventio'n and its uses, what I claiui :is mylinvention, and desire to secure-by Letters'Pafent, is-.'V l Y, e

1. In combn'tionhwibh taLX-ta'bleA, vconstructed substntially'es described, the sliding bar B, operating in the manner and foi' the purposes as s et forth.

2. `Poviding lthe sliding ba1",B,witl:.i tbe projectins b 1:,'as and for the purposes se t fo'ijth.

3. Rendering the sliding er' B adjustable in 'fdirectionnt 'righi angles. ,to 'the carrier E, b v means ofa. 

